Adjustable slide



Aug. 27, 1935. 2 L TARK 2,012,835

ADJUSTABLE SLIDE Filed D ec. so, 1953 JILUQIZZOTY- Star/z;

Patented Aug. 27, 1935 UNITED STATES PATENT OFFICE ADJUSTABLE SLIDE Ludwig Stark, New York, N. Y., assignor to Patent Clasp Corporation, New York, N. Y., a corporation of New York Application December 30, 1933, Serial No. 704,703

1 Claim.

a minimum of material, which can be made with great rapidity and at small expense and shall have the combined advantages of cast metal and press metal structures.

An important feature of the invention is that the longitudinally extending side bars of the frame shall be entirely within the planes of the outer side margins of the end bars.

Referring to the drawing, which illustrates merely by way of example, suitable means for the embodiment of my invention:-

Fig. 1 is a view in perspective on an enlarged scale of the complete device.

Fig. 2 is an end view of same.

Fig. 3 is a plan view of the frame.

Fig. 4 is a similar view of the frame before pressing the end portions into position.

Fig. 5 is a detail on a still larger scale. Similar numerals refer to throughout the sevgral views.

The device, in accordance with my invention, comprises the frame 1, preferably in form of a rectangle, and the clamping member 8 movably associated therewith, as for example, positioned between and pivoted in the end bars 9, as at Ill. The rectangular frame 1 is first formed, as shown in Fig. 4, by stamping from flat sheet metal, having the two longitudinally extending parallel bars ll joining at each end to the end bars 9.

After forming the blank as shown in Fig. 4, the frame is subjected to distorting pressures similar parts v which result in bringing the fiat end extensions or bars 9 into parallel planes which are at right angles to the common plane of the side bars, and

the pressure is so applied that the distortion is 5 distributed between the adjacent portions of the end bars and the side bars, the result of which is that the side bars are so formed and positioned as to lie entirely within the planes of the outer side margins of the end bars. 10

This method of distortion or upsetting of the metal at the junction between the end bars and side bars gives the efiect of joining the side bars to the end bars at or near the longitudinal middle line of the end bars, as is common in the casting operation; and the placing of the bend or distortion partly in the end bar and partly in the side bar adds greatly to the strength of the structure in resisting stresses, and, at the same time, greatly improves its symmetrical ap- 2 0 pearance.

What I claim is:

An adjustable slide comprising a sheet metal frame and a clamping element associated therewith, the frame being of rectangular form having. longitudinally extending side bars, and end bars having their flat extensions in parallel planes at right angles to the, common plane of the side bars, the joining portions of the end and side bars having the bend between the side bars and end bars extending into the end bars beyond the normal iouter marginthereof, whereby the side bars lie entirely within the side margins of the end bars.

LUDWIG STARK. 

